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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United States over time.
The largest autonomous systems registered to United States by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS749US | DNIC-AS-00749 - United States Department of Defense (DoD) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) |
United States against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
32,220 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS26226US | LOYOL-1-ASN - Loyola High School of Los Angeles | 256 | — | 1 |
| AS32445US | XHOP - XHOP LLC | 256 | — | 1 |
| AS393790US | TOUROHOSPITALNOLA - Touro Infirmary Hospital | 256 | — | 1 |
| AS399872US | CULLMAN-REGIONAL-MEDICAL-CENTER - Cullman Regional | 256 | — | 1 |
| AS393438US | CMWD - Calleguas Municipal Water District | 256 | — | 1 |
| AS397910US | TSC - AEG | 256 | — | 1 |
| AS396910US | AS-LCPA-14 - Lee County Port Authority | 256 | — | 1 |
| AS393462US | COLLETTE-HEALTH - Collette Health, LLC | 256 | 1 | 2 |
| AS19158US | ZAYOB-19158 - Zayo Bandwidth | 256 | 1 | 2 |
| AS33249US | ZNT-AS-01 - Zurita Network Technologies LLC | 256 | — | 1 |
| AS30573US | OLDSECONDBANCORP - Old Second Bancorp | 256 | — | 1 |
| AS13992US | SLPT1 - SailPoint Technologies, Inc. | 256 | — | 1 |
| AS393876US | AS-PMGAA - Phoenix-Mesa Gateway Airport Authority | 256 | — | 1 |
| AS394921US | PAH - Punxsutawney Area Hospital | 256 | — | 1 |
| AS16541US | ERICKSON-AS - Erickson Living Management, LLC | 256 | — | 1 |
| AS33589US | CITYOFSOUTHLAKE - City of Southlake | 256 | — | 1 |
| AS394698US | FITCHBURG-STATE-UNIVERSITY - Fitchburg State University | 256 | — | 1 |
| AS14305US | AS14305 - Accuray Incorporated | 256 | — | 1 |
| AS36036US | M-FINANCIAL - M Financial Group | 256 | — | 1 |
| AS400950US | NULLEDLLC - nulled LLC | 256 | 1 | 2 |
| AS34437US | COVERTHART-AS-34437 - CovertHart Networks | 256 | — | 1 |
| AS402918US | SUPERSEND - SuperSend | 256 | — | 1 |
| AS46900US | REPC-AS - Rushmore Electric Power Cooperative, Inc. | 256 | 256 | 2 |
| AS32210US | NTE-64-WHQASNUM - NORTHERN TOOL & EQUIPMENT COMPANY, INC. | 256 | — | 1 |
| AS15210US | VIV-ASN - Vividion Therapeutics, Inc. | 256 | — | 1 |
| AS23359US | WLNYASN - WLNY-TV Inc | 256 | — | 1 |
| AS23037US | HCACA-RMCANNISTON-1 - Northeast Alabama Regional Medical Center | 256 | — | 1 |
| AS55287US | OKLO - Oklo Inc. | 256 | — | 1 |
| AS393272US | PORT-MADISON-ENTERPRISES - Port Madison Enterprises | 256 | — | 1 |
| AS396514US | CI-AS - Carey International, Inc. | 256 | — | 1 |
| AS401349US | ZOLL-LIFEVEST - ZOLL Medical Corporation | 256 | 1 | 2 |
| AS21608US | HCSCNET10 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas | 256 | — | 1 |
| AS20420US | DV - Digital Ventures, LLC | 256 | 2 | 3 |
| AS62924US | COBNET-ASN-1 - City of Bryan, Texas | 256 | — | 1 |
| AS23880US | Yahoo-AEA - Internet content provider | 256 | 1 | 2 |
| AS11217US | CLM-ASN - Carter Ledyard & Milburn LLP | 256 | — | 1 |
| AS46769US | TELECAST COMMUNICATIONS - Telecast Communications | 256 | — | 1 |
| AS63341US | ROKI-AMERICA - ROKI America Co., Ltd. | 256 | — | 1 |
| AS27217US | ACN-2 - Jewelry Television | 256 | 3 | 3 |
| AS53962US | 21FORTY - 2140 Networks LLC | 256 | — | 1 |
| AS398845US | MCC-WACO - McLennan Community College | 256 | — | 1 |
| AS395144US | INDY-ASN-01 - Independent Connections LLC | 256 | — | 1 |
| AS19426US | HARRIS-COUNTY-ESD11-01 - Harris County ESD 11 Mobile Healthcare | 256 | — | 1 |
| AS401620US | HOLOCENE ADVISORS LP - Holocene Advisors, LP | 256 | — | 1 |
| AS394355US | MGRM - MGRM Pinnacle, Inc. | 256 | — | 1 |
| AS46150US | SNHU - Southern New Hampshire University | 256 | — | 1 |